P1203

Manufacturer-specific fault code

This code has different meanings depending on the manufacturer. Select your vehicle make below to view specific diagnosis and solutions:

Code breakdown

P — System

Powertrain (engine, transmission, fuel & emissions)

1 — Type

Manufacturer-specific

2 — Subsystem

Fuel and air metering (injector circuit)

Fiat
Interruzione/cortocircuito iniettore cilindro n° 3
Buick Cadillac Chevrolet Chrysler
(Alternative Fuel) Gas Mass Sensor Circuit High Frequency
GM GMC Oldsmobile Saturn
Alternative Fuel Gas Mass Sensor Circuit High Frequency
Acura Honda Infiniti
Cylinder 3 Misfire
Jaguar
Cylinder 3 Injector Circuit Open/Shorted
Volkswagen
Cylinder 3 Fuel Injector Circuit Electrical Malfunction